[GitHub] [incubator-druid] gianm commented on issue #6358: Interning in SQLMetadataSegmentManager may obliterate new segment metadata

[GitBox <gi...@apache.org>]

gianm commented on issue #6358: Interning in SQLMetadataSegmentManager may obliterate new segment metadata
URL: https://github.com/apache/incubator-druid/issues/6358#issuecomment-490262140
 
 
   If you are migrating your segments from one deep storage to another, you might want to adjust things so the same segment objects have new loadSpecs but retain their IDs. It's valuable because changing the IDs implies changing the version and/or partition numbers, which would cause a lot of churn in the cluster.
   
   Segment metadata also evolves naturally over time as segments are pushed from realtime tasks to deep storage. While they're on realtime tasks, they don't yet have loadSpecs or sizes (maybe other stuff too, I don't remember).

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